.Net Core 8.0 application on IIS in Docker

General
1

Hi,
I have .NET core 8.0 web api application on my Windows 64 bit OS. I want to generate image so that it will be deploy on IIS inside the docker. I am going to use Windows container for this. Please provide me Dockerfile which will create the image of .net core web api, publish it in inetpub location and create site and map to that location to run through IIS.

Thanks,
Mahendra

2

I am able to create the IIS site inside the Docker and also placing published code at docker inetpub location through Dockerfile. Site is showing as started. but when access through browser it shows 500 Internal error. May be some IIS permissions required. Please check my Dockerfile below and suggest any changes.
(I am using Windows container)

Stage 1: Build the application

FROM mcr.microsoft.com/dotnet/sdk:8.0-nanoserver-1809 AS build
WORKDIR /source

Copy the project file(s) and restore any dependencies

COPY *.csproj ./
RUN dotnet restore

Copy the rest of the application code

COPY . .

Publish the application

RUN dotnet publish -c Release -o /app/publish

Stage 2: Create the IIS runtime image

FROM Microsoft Artifact Registry AS runtime
SHELL [“powershell”, “-Command”, “$ErrorActionPreference = ‘Stop’; $ProgressPreference = ‘SilentlyContinue’;”]

Install necessary features for ASP.NET

RUN Install-WindowsFeature NET-Framework-45-ASPNET;
Install-WindowsFeature Web-Asp-Net45

Create a directory for your application

RUN New-Item -Path ‘C:\inetpub\wwwroot\reportapi’ -ItemType Directory

Copy the published application files from the build stage to the IIS directory

COPY --from=build /app/publish/ C:/inetpub/wwwroot/reportapi/

Grant IIS_IUSRS read access to the app directory

RUN icacls “C:\inetpub\wwwroot\reportapi” /grant IIS_IUSRS:R /T

Remove the default website

RUN Remove-WebSite -Name ‘Default Web Site’

Create a new website in IIS pointing to your application

RUN New-Website -Name ‘reportapi’ -Port 80 -PhysicalPath ‘C:\inetpub\wwwroot\reportapi’ -ApplicationPool ‘.NET v4.5’

Expose the port your application will run on

EXPOSE 80

Copy ServiceMonitor.exe from the microsoft/iis image

COPY --from=Microsoft Artifact Registry C:\ServiceMonitor.exe C:\ServiceMonitor.exe

Start IIS when the container starts

CMD [“C:\ServiceMonitor.exe”, “w3svc”]

3

Now I could able to Host my .NET core API on IIS inside the Docker.
It was about to add ASP.NET Core Hosting Bundle. After adding it I can see the result in browser.

Thanks,
Mahendra